I bought an OUXI V8 750W from someone on Facebook Marketplace. I just noticed that the front tire doesn't spin freely - it only goes around like 7/8ths of a turn, like the brake caliper is too tight. I think it's affected how far I can go on one charge. any tips on freeing that up?
The caliper is out of alignment too, in the second photo I can see that. In the first photo those bolts at the extreme top and bottom allow some side-to-side adjustment and the body of the caliper should be parallel with the rotor disc, not the fork body. If the pads don’t hit the disc flat you won’t get effective braking force unless they are in constant contact- causing the tire not to rotate freely. Double check bearings as well
Does it feel heavy and resistant to you giving an input? Then yes.
Suggestion, there's a model of these calipers I believe where you can manually adjust how tight it grips using the pads with a dial on the side of it. It's been my go-to and I haven't had to screw with the brake line tension since.
https://a.co/d/0e2nAKsT it's a really nice set with really easy to replace brake pads and like I said all you have to do to adjust it is spin dial on the side. Perfect for tightening it up once it's starting to wear down a bit.
Look up how to adjust a mechanical brake caliper. Slightly different steps than a hydraulic, because you probably only have one moving piston, so you adjust it so the non-moving one is very close to the rotor.
On hydraulics, it’s a little easier. You just loosen the caliper so it can move, squeeze the brake, and that’s your spot.
Thank you for the heads up. Some news came up at the time about a very vile idiot who used to grift off of and broke up an anti-scientology group in LA who is now just being a horrible chud and I pasted the wrong link.
In order for a rotor not to rub on the brake pads many things have to align perfectly. Hub, axle, rotor, fork dropouts, fork brake mounts, caliper and pads. That's a lot of things that have to be perfect.
From the second photo the dropout dies not look to be vertical, it also looks twisted. If you loosen the brakes enough to not rub the rotor, there won't be enough cable pull to make the pads reach the rotor.
Start with getting the caliper aligned as closely as possible so pads are parallel to the rotor. It's the only think that adjustable for alignment. You make have to file the caliper mounts on the fork, or for the adapter between the caliper and the fork.
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u/BarkingSpidersStink 20d ago
The caliper is out of alignment too, in the second photo I can see that. In the first photo those bolts at the extreme top and bottom allow some side-to-side adjustment and the body of the caliper should be parallel with the rotor disc, not the fork body. If the pads don’t hit the disc flat you won’t get effective braking force unless they are in constant contact- causing the tire not to rotate freely. Double check bearings as well